I want to get the Smart Harmony integrated into my current XT Live, not sure how best to do so.

I once had a Boss PS5, which sounded great in the loop of a regular amp, but when I had it in front of my XT Live, it sounded compressed & squishy.

If I were to add an M5 or M9 to be used with my XT Live, would it be best to place it before, or after the XT Live?

I would have presets specific to each song, with the XT Live sending a midi signal to the M5 or M9.

Any experience/thoughts/councel?